A fetus is consitered viable at 24-25
Answer: Tetracycline.
Explanation:
A plasmid is a small circular DNA molecule found in bacteria that is separate from the bacterial chromosome and replicates independently of it. They encode for certain genes that play a key role in antibiotic resistance. <u>Restriction enzymes are endonucleases that catalyze the cleavage of phosphodiester bonds in different regions located within a DNA strand</u>. PstI is an example of an endonuclease, it is a type II restriction enzyme produced by the microorganism <em>Providencia stuartii</em> that possesses a restriction target in double-stranded DNA dependent on an unmethylated, palindromic, asymmetric sequence, and in this example, it cuts the plasmid at a single site in the ampicillin-resistance gene. After that, the DNA is annealed with another fragment of DNA and this new recombinant molecule is used to transform <em>E. coli</em> cells. Transformation is a key step in DNA cloning because it occurs after restriction enzyme digestion and ligation treatments and transfers newly made plasmids into bacteria. <u>So these bacterias will have a new fragment of DNA, which still has a tetracycline resistance gene but it no longer has the ampicillin resistance gene because it was disrupted by the restiction enzyme</u>. Thereby, the antibiotic resistance phenotype is the tetracycline resistace.
<span>c.more directly
The equator more tilted facing to the Sun, therefore tropical and desert regions are present on the area.</span>
A. -C-G-A-A-U-C-A-G-G-U-A-A
RNA has three of the same bases as DNA and the fourth is U (uracil) instead of T (thymine)
C pairs with G, G pairs with C
A pairs with U, T(U) pairs with A
